Documents the complete analysis, implementation, and results of the PSD extraction refactoring from the architecture advisor's recommendations. Includes: - Problem statement and key insights - Architecture analysis (data-oriented approach) - Implementation phases and results - Testing outcomes and metrics - 227 files migrated, ~40 lines reduced, 220+ → 1-4 requests 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>